volume air-flow

Accumulator Tank: a sealed air chamber combined with a water reservoir provides expansion volume to reduce pump cycling from minor pressure changes and give a steady flow.

压力鼓：你个密封的空间结合水箱来提供充足的空间来减少泵循环时较小的压力改变和稳定的水流。

Therefore, optional air compressor is the step: make sure the working pressure, then set corresponding volume flow, and finally the power supply capacity.

因此，选配空压机的步骤是：先确定工作压力，再定相应容积流量，最后是供电容量。

Taking deep breaths will fix that by creating a steady volume of air flow over your vocal cords, and help calm your nerves too.

深呼吸可以使稳定的气流通过声带，进而解决这一问题，同时缓解演讲者的紧张情绪。